In Decoder::decode : predicted transition has to be appliable

decoder/src/Decoder.cpp

@@ -28,7 +28,7 @@ void Decoder::decode(BaseConfig & config, std::size_t beamSize, bool debug)
     int chosenTransition = -1;
 
     for (unsigned int i = 0; i < prediction.size(0); i++)
-      if ((chosenTransition == -1 or prediction[i].item<float>() > prediction[chosenTransition].item<float>()) and machine.getTransitionSet().getTransition(i))
+      if ((chosenTransition == -1 or prediction[i].item<float>() > prediction[chosenTransition].item<float>()) and machine.getTransitionSet().getTransition(i)->appliable(config))
         chosenTransition = i;
 
     if (chosenTransition == -1)